#include <bits/stdc++.h>
using namespace std;
#define fs first
#define endl '\n'
#define sc second
#define pb push_back
#define int long long
#define bit(x) (1ll << (x))
#define sz(x) (int)(x).size()
#define al(x) (x).begin(),(x).end()
#define all(x) (x).begin() + 1,(x).end()
using LL = long long;
using VI = vector <int>;
using VS = vector <string>;
using PII = pair <int, int>;
using I64 = unsigned long long;
using VVI = vector < vector<int> >;
template<LL N> using AL = array<LL, N>;
template<int N> using AI = array<int, N>;
const int inf = bit(60);

void solve() {
    double a, b;
    cin >> a >> b;
    double tmp = 0;
    double cur = 0.5;
    string ans;
    while(fabs(tmp - b) > 1e-4) {
        if(fabs(tmp - b) > cur) {
            ans += '2';
            tmp += cur;
        }
        else ans += '1';
        cur *= 0.5;
    }
    reverse(al(ans));
//    cout << sz(ans) << endl;
    for(int i = 1;i <= 14;i++) cout << '1';
    cout << ans << endl;
}

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    cout << fixed << setprecision(10);
    int T = 1;
//    cin >> T;
    while(T--) solve();

    return 0;
}